Compilare: main.cpp: In function 'int main()': main.cpp:41:44: warning: array subscript has type 'char' [-Wchar-subscripts] 41 | hash1_s = (hash1_s * base + val[s[i]]) % mod1; | ~~~^ main.cpp:42:45: warning: array subscript has type 'char' [-Wchar-subscripts] 42 | hash2_s = (hash2_s * base + val[s[i]]) % mod2; | ~~~^ main.cpp:43:49: warning: array subscript has type 'char' [-Wchar-subscripts] 43 | hash_pre1 = (hash_pre1 * base + val[ch[i]]) % mod1; | ~~~~^ main.cpp:44:49: warning: array subscript has type 'char' [-Wchar-subscripts] 44 | hash_pre2 = (hash_pre2 * base + val[ch[i]]) % mod2; | ~~~~^ main.cpp:55:55: warning: array subscript has type 'char' [-Wchar-subscripts] 55 | hash_pre1 = 1LL * ((hash_pre1 - (val[ch[i - sz]] * p1) % mod1 + mod1) * base + val[ch[i]]) % mod1; | ~~~~~~~~~^ main.cpp:55:96: warning: array subscript has type 'char' [-Wchar-subscripts] 55 | hash_pre1 = 1LL * ((hash_pre1 - (val[ch[i - sz]] * p1) % mod1 + mod1) * base + val[ch[i]]) % mod1; | ~~~~^ main.cpp:56:55: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | hash_pre2 = 1LL * ((hash_pre2 - (val[ch[i - sz]] * p2) % mod2 + mod2) * base + val[ch[i]]) % mod2; | ~~~~~~~~~^ main.cpp:56:96: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | hash_pre2 = 1LL * ((hash_pre2 - (val[ch[i - sz]] * p2) % mod2 + mod2) * base + val[ch[i]]) % mod2; | ~~~~^